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Unless you're using an older game, can't you see EVs from a pokemon's super training screen?
I mean, I know it isn't an exact number, but at least for me, u only ever use 252, 176, 80, and 4 EVs for any given allotment, and it isn't hard to tell which is which. I used to use 128/124 splits, which MIGHT have had some chance of being confused, but ultimately cut it out when I realized you might as well focus on physical defense for singles and special for doubles, unless a mon specifically calls for elsewise.
As far as IVs go, if you're using it, it should be bred <or hacked> to be a 31, 0, or inconsequential, barring HP, which could be recorded however or just memorized, depending on how often you actually put HP on your mons.